Dumping-cage.



Patented Nov. 28, I899.

W. G. HALBEBT.

DUMPING CAGE.

(Application filed Oct. 20, 1897.)

(No Model.)

W/reaaea s cc. Pump-urns" \VASHKNG WILLIAM G. I-IALBERT, OF VVESTVILLE, ILLINOIS.

DUMPlNG-CAGE.

SPECIFICATION formingpart of Letters Patent N 0. 638,114, dated November 28, 1899.

Application filed October 20, 1897- Serial No. 655,809- (No model.)

To all whom it may concern: I

Be it known that I, WILLIAM G. HALBERT, a citizen of the United States, residing at Westville, in the county of Vermilion and State of Illinois, have invented certain new and useful Improvements in Dumping-Cages, of which the followingisaspecification,referencebeing had therein to the accompanying drawings.

My invention relates particularly to improvements in dumping-cages of that class used in elevating coal from mines; and the object of my invention is to provide a means for retaining the tilting platform in a state of semi-equilibrium until it reaches the dumping-level without recourse to guide-posts and rollers heretofore required in practice in the control of such cages.

Tothis end my invention consists in the means and manner of supporting a tilting platform from a point beneath said platform by toothed rocker-shoes mounted on stationary rocker-castings, said castings being pro vided on their upper faces with teeth or cogs that are adapted to register with like notches on the contacting faces of the rocker-shoes, said joined toothed members being so located relatively to the platform that they are ranged axially in a line vertically coincident with the center of gravity of said platform, thereby providinga toothed bearing that extends substantially in a longitudinal plane to form a base suflicient to maintain the distribution of the load in a state of semi-equilibrium.

In the accompanying drawings, Figure 1 represents a side elevation of my improved d limping-cage as supported in the hoist-frame by the improved means. Fig. 2 represents the same in side elevation, showing the means employed for sustaining the platform on a rocker-bearing, while Fig. 3 representsin perspective the detached rocker-casting A, and Fig. 4 shows the detached rocker-plate B.

Like letters of reference indicate like parts in all the figures.

Referring to said drawings, a a indicate the vertical main posts, which constitute the framework or shaft rising from the mouth of the mine and within which the cage vertically reciprocates.

The cage or suspended hoist-frame comprises the usual upper and lower cross-frame pieces or beams b b b b, which are connected by the vertical parallel'rods r r on either side and braced by the brace-rods r r, as shown in Fig. 2, thus constituting the usual hoistframework. From the upper side of the cross head I) I) extend the supporting-chains c c, which are connected in the usual manner with the hoisting chain or cable.

0 represents the usual cage-platform, which consists of framework and flooring and which is adapted to be pivotally suspended from beneath by suitable iron brace-rods cl (1, that extend from the respective sides of the platform downwardly to forth a union with the respective rocker-plates B B, to which they are rigidly united. Said rocker plates or shoes B B are arranged axially with regard to said platform and are provided on their bearing-faces with teeth or cogs 11 i, which are adapted to register and mesh with correspond ing teeth on the upper faces of the stationary rocker-castings A A. These toothed members are slightly flattened on their hearing faces to provide a suitable base-support under normal conditions or until the platform has received a side thrust from without.

The movement of the rocker members B B is checked by means of stop-pins h h, which work through central openings in the stationary castings A A and rockers B B. The stoppins are provided with bearin gs h h and stopkeys h h", which limit the movement of the rockers by contact with the surfaces of the stationary castings and rockers, respectively. By this arrangement it will be seen that the rockers normally rest upon a flattened toothed base (indicated between the points m m) until the impulse for dumping has moved the load and platform sufficiently to cause a vertical line passing through the center of gravity of the load and platform to fall outside the base m m, after which the load is dumped by gravity through the remainder of its course.

Upon the cage-platform is shown a car of the usual construction, with its wheels held confined by a simple form of wheel-clamp g. The platform thus supported can be tilted to either side, and this can be effected in practice by the employment of simple instrumentalities for causing a side thrust at the dumplevel.

Having described my invention, what I desire to claim as new and useful is- 1. A tilting cage provided with a pivotal members mounted on stationary toothed castplatform, said platform being sustained by ings, said members being axially ranged relatoothed rocker members, mounted on stationtively to said platform and provided with limary toothed castings, that are axially ranged iting stop-pins substantially as described. I 5

5 in a line vertically coincident With the cen- In testimony whereof I affix my signature ter of gravity of said platform; said toothed in presence of two witnesses. members being slightly flattened on their bearing-faces to provide a suitable base, substantially as described. Witnesses: 1o 2. A tilting cage provided with a pivotal H. M. STEELY,

platform, that is sustained by toothed rocker LOTA VAN GUNDY.

WILLIAM G. HALBERT. 

